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Posted to user@commons.apache.org by James Watkin <ja...@anderson.ucla.edu> on 2007/09/10 04:45:38 UTC

[StrSubstitutor] Can StrSubstitutor be used without a prefix or suffix?

I'd like to use org.apache.commons.lang.text.StrSubstitutor without a 
suffix requirement for the replacement targets, but it doesn't seem to 
support that. Is that correct?

Although the doc for org.apache.commons.lang.text.StrSubstitutor 
disallows a null prefix or suffix in the constructor, it doesn't mention 
the empty string. I tried the empty string for the prefix and suffix but 
that didn't work.

- Jim
______________________________
James Watkin
ACIS Software Development
UCLA Anderson School
james.watkin@anderson.ucla.edu
Voice: 1-310-825-5030
   Fax: 1-310-825-4835
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Re: [StrSubstitutor] Can StrSubstitutor be used without a prefix or suffix?

Posted by James Watkin <ja...@anderson.ucla.edu>.
To be clear, I meant that I wrote my own search & replace code, not 
using StrSubstitutor.

Even if it were possible to do something with StrMatcher, as a future 
enhancement, it might be nice if it could also be done by setting the 
prefix and suffix to "" directly from the StrSubstitutor API.

- Jim

James Watkin wrote:
> Oliver,
> 
> Thanks for the advice. I had briefly looked at that and didn't see an 
> obvious "match anything" StrMatcher so I opted to write my own code. 
> Depending on formating, it's only around ten lines of code.
> 
> - Jim
> 
> Oliver Heger wrote:
>> James Watkin wrote:
>>> I'd like to use org.apache.commons.lang.text.StrSubstitutor without a 
>>> suffix requirement for the replacement targets, but it doesn't seem 
>>> to support that. Is that correct?
>>>
>>> Although the doc for org.apache.commons.lang.text.StrSubstitutor 
>>> disallows a null prefix or suffix in the constructor, it doesn't 
>>> mention the empty string. I tried the empty string for the prefix and 
>>> suffix but that didn't work.
>>>
>>> - Jim
>>
>> By looking at the code, yes, it seems that a suffix is required.
>>
>> How do the variables look like you are dealing with? Perhaps it is an 
>> option to provide your own implementation of the StrMatcher class [1], 
>> which is internally used for detecting prefixes and suffixes 
>> (StrSubstitutor has methods that take such matchers instead of a 
>> prefix and a suffix as string). This should not be too complicated.
>>
>> HTH
>> Oliver
>>
>> [1] 
>> http://commons.apache.org/lang/api-release/org/apache/commons/lang/text/StrMatcher.html 
>>
>>
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>> To unsubscribe, e-mail: user-unsubscribe@commons.apache.org
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> 

-- 
______________________________
James Watkin
ACIS Software Development
UCLA Anderson School
james.watkin@anderson.ucla.edu
Voice: 1-310-825-5030
   Fax: 1-310-825-4835
______________________________

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Re: [StrSubstitutor] Can StrSubstitutor be used without a prefix or suffix?

Posted by James Watkin <ja...@anderson.ucla.edu>.
Oliver,

Thanks for the advice. I had briefly looked at that and didn't see an 
obvious "match anything" StrMatcher so I opted to write my own code. 
Depending on formating, it's only around ten lines of code.

- Jim

Oliver Heger wrote:
> James Watkin wrote:
>> I'd like to use org.apache.commons.lang.text.StrSubstitutor without a 
>> suffix requirement for the replacement targets, but it doesn't seem to 
>> support that. Is that correct?
>>
>> Although the doc for org.apache.commons.lang.text.StrSubstitutor 
>> disallows a null prefix or suffix in the constructor, it doesn't 
>> mention the empty string. I tried the empty string for the prefix and 
>> suffix but that didn't work.
>>
>> - Jim
> 
> By looking at the code, yes, it seems that a suffix is required.
> 
> How do the variables look like you are dealing with? Perhaps it is an 
> option to provide your own implementation of the StrMatcher class [1], 
> which is internally used for detecting prefixes and suffixes 
> (StrSubstitutor has methods that take such matchers instead of a prefix 
> and a suffix as string). This should not be too complicated.
> 
> HTH
> Oliver
> 
> [1] 
> http://commons.apache.org/lang/api-release/org/apache/commons/lang/text/StrMatcher.html 
> 
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@commons.apache.org
> For additional commands, e-mail: user-help@commons.apache.org
> 

-- 
______________________________
James Watkin
ACIS Software Development
UCLA Anderson School
james.watkin@anderson.ucla.edu
Voice: 1-310-825-5030
   Fax: 1-310-825-4835
______________________________

---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@commons.apache.org
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Re: [StrSubstitutor] Can StrSubstitutor be used without a prefix or suffix?

Posted by Oliver Heger <ol...@oliver-heger.de>.
James Watkin wrote:
> I'd like to use org.apache.commons.lang.text.StrSubstitutor without a 
> suffix requirement for the replacement targets, but it doesn't seem to 
> support that. Is that correct?
> 
> Although the doc for org.apache.commons.lang.text.StrSubstitutor 
> disallows a null prefix or suffix in the constructor, it doesn't mention 
> the empty string. I tried the empty string for the prefix and suffix but 
> that didn't work.
> 
> - Jim

By looking at the code, yes, it seems that a suffix is required.

How do the variables look like you are dealing with? Perhaps it is an 
option to provide your own implementation of the StrMatcher class [1], 
which is internally used for detecting prefixes and suffixes 
(StrSubstitutor has methods that take such matchers instead of a prefix 
and a suffix as string). This should not be too complicated.

HTH
Oliver

[1] 
http://commons.apache.org/lang/api-release/org/apache/commons/lang/text/StrMatcher.html

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